docs: remove registries from docs and examples

config/dev.exs

@@ -24,11 +24,6 @@ config :ash_authentication, Example.Repo,
   show_sensitive_data_on_connection_error: true,
   pool_size: 10
 
-config :ash_authentication, Example,
-  resources: [
-    registry: Example.Registry
-  ]
-
 config :ash_authentication,
   authentication: [
     strategies: [

config/test.exs

@@ -10,11 +10,6 @@ config :ash_authentication, Example.Repo,
   pool: Ecto.Adapters.SQL.Sandbox,
   pool_size: 10
 
-config :ash_authentication, Example,
-  resources: [
-    registry: Example.Registry
-  ]
-
 config :bcrypt_elixir, :log_rounds, 4
 
 config :ash, :disable_async?, true

dev/dev_server/json_api_router.ex

@@ -1,4 +1,4 @@
 defmodule DevServer.JsonApiRouter do
   @moduledoc false
-  use AshJsonApi.Api.Router, api: Example, registry: Example.Registry
+  use AshJsonApi.Api.Router, api: Example
 end

documentation/tutorials/getting-started-with-authentication.md

@@ -101,7 +101,8 @@ defmodule MyApp.Accounts do
   use Ash.Api
 
   resources do
-    registry MyApp.Accounts.Registry
+    resource MyApp.Accounts.User
+    resource MyApp.Accounts.Token
   end
 end
 ```
@@ -113,21 +114,6 @@ Be sure to add it to the `ash_apis` config in your `config.exs`
 config :my_app, :ash_apis, [..., MyApp.Accounts]
 ```
 
-Next, let's define our registry:
-
-```elixir
-# lib/my_app/accounts/registry.ex
-
-defmodule MyApp.Accounts.Registry do
-  use Ash.Registry, extensions: [Ash.Registry.ResourceValidations]
-
-  entries do
-    entry MyApp.Accounts.User
-    entry MyApp.Accounts.Token
-  end
-end
-```
-
 Next, let's define our `Token` resource.  This resource is needed
 if token generation is enabled for any resources in your application.  Most of
 the contents are auto-generated, so we just need to provide the data layer
@@ -152,7 +138,7 @@ defmodule MyApp.Accounts.Token do
     table "tokens"
     repo MyApp.Repo
   end
-  
+
   # If using policies, add the following bypass:
   # policies do
   #   bypass AshAuthentication.Checks.AshAuthenticationInteraction do
@@ -205,7 +191,7 @@ defmodule MyApp.Accounts.User do
   identities do
     identity :unique_email, [:email]
   end
-  
+
   # If using policies, add the folowing bypass:
   # policies do
   #   bypass AshAuthentication.Checks.AshAuthenticationInteraction do

test/support/example.ex

@@ -3,7 +3,10 @@ defmodule Example do
   use Ash.Api, otp_app: :ash_authentication, extensions: [AshGraphql.Api, AshJsonApi.Api]
 
   resources do
-    registry Example.Registry
+    resource Example.User
+    resource Example.UserWithTokenRequired
+    resource Example.Token
+    resource Example.UserIdentity
   end
 
   json_api do